[Solved] Help me make slime in FLUIDOS.

Questionable Sanity

I've been trying to use FLUIDOS to generate thin and clingy strands of slime. But no matter how I try, my renders either come out lumpy or dissolve into dust. How can I get what I'm looking for out of FLUIDOS? Is it even possible?

Alberto

Yes, it's possible.

Try using viscosity.

Here, it's attached a basic example (a .duf file). See below the settings of the Domain:

Make sure the width the strand it's at least twice the cell size value to work properly.

 

Questionable Sanity

So if I want strands that are 0.3 cm thick, I need to have a cell size which is 0.15 cm or less?

I want slime that clings to objects and makes those dangling clinging arcs, not just individual strands of syrup that drips from the ceilings. I'm simulating this by using primitive shapes as fluid masses, and using people and objects as solid obstacles. For this purpose, a viscosity of 100 is way too thin; it basically becomes slightly thicker water and vanishes in under three seconds. I need strands that persist, so I need much higher viscosity. But once I turn up the viscosity (to 8192, which is not even 0.01% of the maximum limit), the thicker and less drippy parts start to spontaneously disappear for seemingly no reason.

Alberto

Questionable Sanity said:

So if I want strands that are 0.3 cm thick, I need to have a cell size which is 0.15 cm or less?

Yes.

Questionable Sanity said:

I want slime that clings to objects and makes those dangling clinging arcs, not just individual strands of syrup that drips from the ceilings. I'm simulating this by using primitive shapes as fluid masses, and using people and objects as solid obstacles. For this purpose, a viscosity of 100 is way too thin; it basically becomes slightly thicker water and vanishes in under three seconds. I need strands that persist, so I need much higher viscosity. But once I turn up the viscosity (to 8192, which is not even 0.01% of the maximum limit), the thicker and less drippy parts start to spontaneously disappear for seemingly no reason.

To avoid the fluid to vanish, set the Subdivision level to 2, at least.

Are solid obstacles moving? if it's so, set Enable moving obstacles to ON.

Let me know if this doesn't work, please.

Havos

Keep in mind that a smaller cell size will significantly increase the time needed to simulate. Also remember that size is relative, and changable. You can always simulate something with a strand size of 1.5 cm thick, and then later downsize the final mesh to 20% in order to get strands of 0.3cm.. 

Questionable Sanity

Parts of the fluid keep vanishing for no obvious reason. I just don't understand what I'm doing wrong. Can anyone look at these attachments and see if they can figure it out?

Questionable Sanity

This is really starting to wear me down. How can there be all this fluid above the pegs one frame, and all of sudden just vanish in the next frame?

Alberto

Questionable Sanity said:

This is really starting to wear me down. How can there be all this fluid above the pegs one frame, and all of sudden just vanish in the next frame?

Sorry for the delay. I was away from my PC.

Your concern is about the fluid breaking in little drops, isn't it?, try increasing the Marker Particles Scale.

If this doesn't work, let me know, or maybe, you could upload the .duf, please. 

Questionable Sanity

Over the weekend, I was able to figure out a solution to my problem. I discovered that I can add body forces to solid objects, so I gave the pegs double gravity in order to emulate the fluid's tendency to cling to objects. Here's the video: https://beta.lbry.tv/ClingySlime/8

Alberto

Questionable Sanity said:

Over the weekend, I was able to figure out a solution to my problem. I discovered that I can add body forces to solid objects, so I gave the pegs double gravity in order to emulate the fluid's tendency to cling to objects. Here's the video: https://beta.lbry.tv/ClingySlime/8

It's beautiful !